New Coffee Brewer Tests Keurig CEO's Recipe

Company's Shares Have Jumped More Than 50% This Year

BURLINGTON, Mass.—Keurig Green Mountain Inc. is rolling out a new version of its namesake coffee brewer that so challenged its engineers that one used his children's Legos to solve a design problem.

Keurig 2.0, which will go on sale on retailers' websites Sunday, marks the first major product introduction under Chief Executive Brian Kelley, who pressed his engineers to develop a machine that could brew versions of its single-serve coffee pods as well as a whole carafe of coffee. The company's previous brewers made for...